Find the missing term: 100, 81, 64, 49, ? MCQ with Answer and Explanation

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Find the missing term: 100, 81, 64, 49, ?

A. 25

B. 35

C. 32

D. 36

Answer: Option D

Solution (By JKSSB Mock Tests)

The terms are decreasing squares: 10²=100, 9²=81, 8²=64, 7²=49, so next is 6²=36.

This question belongs to: Reasoning Mental Reasoning

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Practice More Mental Reasoning Questions

Question #1

If PENCIL is coded as ODMBHK, how is ERASER coded?

A. DQZRDQ

B. DQZRFQ

C. DQZREQ

D. DQZRER

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Correct Answer: Option A

Explanation:
Each letter is shifted 1 place backward. E-1=D, R-1=Q, A-1=Z, S-1=R, E-1=D, R-1=Q.

This question belongs to: Reasoning Mental Reasoning

Question #2

What is the angle between the hour hand and the minute hand of a clock when the time is 3:25?

A. 47.5°

B. 57.5°

C. 67.5°

D. 77.5°

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Correct Answer: Option A

Explanation:
Formula: |30H - 5.5M|. |30×3 - 5.5×25| = |90 - 137.5| = 47.5°.

This question belongs to: Reasoning Mental Reasoning

Question #3

Find the missing term in the series: 2, 3, 8, 27, 112, ?

A. 560

B. 550

C. 555

D. 565

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Correct Answer: Option D

Explanation:
Pattern: 2×1+1=3, 3×2+2=8, 8×3+3=27, 27×4+4=112, 112×5+5=565.

This question belongs to: Reasoning Mental Reasoning

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